Minor fixes

AdaGenerator.py

@@ -69,6 +69,8 @@
 
 
 import logging
+from itertools import chain
+
 from singledispatch import singledispatch
 
 import ogAST
@@ -98,7 +100,6 @@ def generate(ast):
 def _process(process):
     ''' Generate the code for a complete process (AST Top level) '''
     process_name = process.processName
-    VARIABLES.update(process.variables)
     global TYPES
     TYPES = process.dataview
     del OUT_SIGNALS[:]
@@ -106,24 +107,9 @@ def _process(process):
     del INNER_PROCEDURES[:]
     OUT_SIGNALS.extend(process.output_signals)
     PROCEDURES.extend(process.procedures)
-    INNER_PROCEDURES.extend(process.content.inner_procedures)
 
     LOG.info('Generating Ada code for process ' + str(process_name))
 
-    # Generate the code to declare process-level variables
-    process_level_decl = []
-    for var_name, (var_type, def_value) in process.variables.viewitems():
-        if def_value:
-            # Expression must be a ground expression, i.e. must not
-            # require temporary variable to store computed result
-            dst, dstr, dlocal = generate(def_value)
-            assert not dst and not dlocal, 'DCL: Expecting a ground expression'
-        process_level_decl.append(
-                'l_{n} : aliased asn1Scc{t}{default};'.format(
-                        n=var_name,
-                        t=var_type.ReferencedTypeName.replace('-','_'),
-                        default=' := ' + dstr if def_value else ''))
-
     # Flatten the nested states, add states to the process state list
     # Requires renaming of nested states and setting chaining of transitions
     def update_terminator(context, term, process):
@@ -144,9 +130,18 @@ def _process(process):
             to process, updating indexes, and update terminators
         '''
         trans_idx = len(process.transitions)
-        state.mapping = {state.statename + '_' + key:state.mapping.pop(key)
+        prefix = state.statename + '_'
+        state.mapping = {prefix + key:state.mapping.pop(key)
                          for key in state.mapping.keys()}
         process.transitions.extend(state.transitions)
+
+        # Add prefix to local variable names and push them at process level
+        for dcl in state.variables.viewkeys():
+            rename_everything(state.content, dcl, prefix + dcl)
+        state.variables = {prefix + key: state.variables.pop(key)
+                           for key in state.variables.keys()}
+        process.variables.update(state.variables)
+
         for key, value in state.mapping.viewitems():
             # Update transition indices
             if isinstance(value, int):
@@ -155,17 +150,60 @@ def _process(process):
                 for inp in value:
                     inp.transition_id += trans_idx
         process.mapping.update(state.mapping)
+
+        # If composite state has entry procedures, add the call
+        if state.entry_procedure:
+            for each in (trans for trans in state.mapping.viewvalues()
+                         if isinstance(trans, int)):
+                call_entry = ogAST.ProcedureCall()
+                call_entry.inputString = 'entry'
+                call_entry.output = [{'outputName': prefix + 'entry',
+                                     'params': [], 'tmpVars': []}]
+                process.transitions[each].actions.insert(0, call_entry)
+
+        # If composite state has exit procedure, add the call
+        if state.exit_procedure:
+            for each in chain(state.transitions, (lab.transition for lab in
+                                              state.content.floating_labels)):
+                if each.terminator.kind == 'return':
+                    call_exit = ogAST.ProcedureCall()
+                    call_exit.inputString = 'exit'
+                    call_exit.output = [{'outputName': prefix + 'exit',
+                                     'params': [], 'tmpVars': []}]
+                    each.actions.append(call_exit)
+
         for inner in state.composite_states:
-            inner.statename = state.statename + '_' + inner.statename
+            # Go recursively in inner composite states
+            inner.statename = prefix + inner.statename
             update_composite_state(inner, process)
         for each in state.terminators:
-            # Update state names in terminators and set next transition id
+            # Give prefix to terminators
+            if each.label:
+                each.label.inputString = prefix + each.label.inputString
             if each.kind == 'next_state':
-                each.inputString = state.statename + '_' + each.inputString
+                each.inputString = prefix + each.inputString
+                # Set next transition id
                 update_terminator(state, each, process)
+            elif each.kind == 'join':
+                rename_everything(state.content,
+                                  each.inputString,
+                                  prefix + each.inputString)
+        for each in state.labels:
+            # Give prefix to labels in transitions
+            rename_everything(state.content,
+                              each.inputString,
+                              prefix + each.inputString)
+        # Add prefixed floating labels of the composite state to the process
+        process.content.floating_labels.extend(state.content.floating_labels)
+        # Rename inner procedures
+        for each in state.content.inner_procedures:
+            rename_everything(state.content, each.inputString,
+                              prefix + each.inputString)
+            each.inputString = prefix + each.inputString
+        process.content.inner_procedures.extend(state.content.inner_procedures)
 
     def propagate_inputs(nested_state, inputlist):
-        ''' Nested states: Inputs at level N but be handled at level N-1
+        ''' Nested states: Inputs at level N must be handled at level N-1
             that is, all inputs of a composite states (the ones that allow
             to exit the composite state from the outer scope) must be
             processed by each of the substates.
@@ -190,6 +228,24 @@ def _process(process):
         if each.kind == 'next_state':
             update_terminator(process, each, process)
 
+    VARIABLES.update(process.variables)
+    INNER_PROCEDURES.extend(process.content.inner_procedures)
+
+    # Generate the code to declare process-level variables
+    process_level_decl = []
+    for var_name, (var_type, def_value) in process.variables.viewitems():
+        if def_value:
+            # Expression must be a ground expression, i.e. must not
+            # require temporary variable to store computed result
+            dst, dstr, dlocal = generate(def_value)
+            assert not dst and not dlocal, 'DCL: Expecting a ground expression'
+        process_level_decl.append(
+                'l_{n} : aliased asn1Scc{t}{default};'.format(
+                        n=var_name,
+                        t=var_type.ReferencedTypeName.replace('-','_'),
+                        default=' := ' + dstr if def_value else ''))
+
+
     # Add the process states list to the process-level variables
     states_decl = 'type states is ('
     states_decl += ', '.join(name for name in process.mapping.iterkeys()
@@ -437,9 +493,9 @@ package {process_name} is'''.format(process_name=process_name,
     # Add the code for the floating labels
     taste_template.extend(code_labels)
 
-    if code_labels:
-        taste_template.append('<<next_transition>>')
-        taste_template.append('null;')
+    #if code_labels:
+    taste_template.append('<<next_transition>>')
+    taste_template.append('null;')
     taste_template.append('end loop;')
     taste_template.append('end runTransition;')
     taste_template.append('\n')
@@ -587,14 +643,17 @@ def _call_external_function(output):
                 code.extend(p_code)
                 local_decl.extend(p_local)
                 # Create a temporary variable for input parameters only
-                if param_direction == 'in':
-                    tmp_id = out['tmpVars'][idx]
-                    local_decl.append('tmp{idx} : aliased asn1Scc{oType};'
-                                      .format(idx=tmp_id, oType=typename))
-                    code.append('tmp{idx} := {p_id};'.format(
-                        idx=tmp_id, p_id=p_id))
-                    list_of_params.append("tmp{idx}'access".
-                            format(idx=out['tmpVars'][idx]))
+                # (If needed, i.e. if argument is not a local variable)
+                if param_direction == 'in' \
+                and (not (isinstance(param, ogAST.PrimVariable) and
+                p_id.startswith('l_')) or isinstance(param, ogAST.PrimFPAR)):
+                        tmp_id = out['tmpVars'][idx]
+                        local_decl.append('tmp{idx} : aliased asn1Scc{oType};'
+                                          .format(idx=tmp_id, oType=typename))
+                        code.append('tmp{idx} := {p_id};'
+                                    .format(idx=tmp_id, p_id=p_id))
+                        list_of_params.append("tmp{idx}'access"
+                                              .format(idx=out['tmpVars'][idx]))
                 else:
                     # Output parameters - no need for a temp variable
                     list_of_params.append("{var}'access".format(var=p_id))
@@ -1228,15 +1287,14 @@ def _decision(dec):
     actual_type = getattr(
             question_type, 'ReferencedTypeName', None) or question_type.kind
     actual_type = actual_type.replace('-', '_')
-    basic = False
-    if actual_type in ('IntegerType', 'Integer32Type', 'BooleanType',
-                       'RealType', 'EnumeratedType', 'ChoiceEnumeratedType'):
-        basic = True
+    basic = find_basic_type(question_type).kind in ('IntegerType',
+                          'Integer32Type', 'BooleanType',
+                          'RealType', 'EnumeratedType', 'ChoiceEnumeratedType')
     # for ASN.1 types, declare a local variable
     # to hold the evaluation of the question
     if not basic:
         local_decl.append('tmp{idx} : aliased asn1Scc{actType};'.format(
-            idx=dec.tmpVar, actType=actual_type))
+                          idx=dec.tmpVar, actType=actual_type))
     q_stmts, q_str, q_decl = generate(dec.question)
     # Add code-to-model traceability
     code.extend(traceability(dec))
@@ -1246,6 +1304,7 @@ def _decision(dec):
         code.append('tmp{idx} := {q};'.format(idx=dec.tmpVar, q=q_str))
     sep = 'if '
     for a in dec.answers:
+        code.extend(traceability(a))
         if a.kind in ('open_range', 'constant'):
             # Note: removed and a.transition here because empty transitions
             # have a different meaning, and a "null;" statement has to be
@@ -1261,7 +1320,7 @@ def _decision(dec):
                         exp = 'not ' + exp
                 else:
                     exp = 'tmp{idx} {op} {ans}'.format(idx=dec.tmpVar,
-                            op=OPERANDS[a.openRangeOp], ans=ans_str)
+                            op=a.openRangeOp.operand, ans=ans_str)
             else:
                 exp = '{q} {op} {ans}'.format(q=q_str,
                                               op=a.openRangeOp.operand,
@@ -1334,6 +1393,7 @@ def _transition(tr):
                     if tr.terminator.next_id == -1:
                         code.append('state := {nextState};'.format(
                                  nextState=tr.terminator.inputString))
+                code.append('goto next_transition;')
             elif tr.terminator.kind == 'join':
                 code.append('goto {label};'.format(
                     label=tr.terminator.inputString))
@@ -1348,9 +1408,11 @@ def _transition(tr):
                                                     (tr.terminator.return_expr)
                         code.extend(stmts)
                         local_decl.extend(local)
-                    code.append('return{};'.format(' ' + string if string else ''))
+                    code.append('return{};'
+                                .format(' ' + string if string else ''))
                 else:
                     code.append('trId := ' + str(tr.terminator.next_id) + ';')
+                    code.append('goto next_transition;')
     if empty_transition:
         # If transition does not have any statement, generate an Ada 'null;'
         code.append('null;')
@@ -1578,6 +1640,144 @@ def find_labels(trans):
                     yield new_fl
 
 
+@singledispatch
+def rename_everything(ast, from_name, to_name):
+    '''
+        Rename in all symbols all occurences of name_ref into new_name.
+        This is used to avoid name clashes in nested diagrams when they get
+        flattened. For example rename all accesses to a variable declared
+        in the scope of a composite state, so that they do not overwrite
+        a variable with the same name declared at a higher scope.
+    '''
+    pass
+
+@rename_everything.register(ogAST.Automaton)
+def _rename_automaton(ast, from_name, to_name):
+    ''' Renaming at Automaton top level (content of digragrams) '''
+    transitions = []
+    if ast.start:
+        rename_everything(ast.start.transition, from_name, to_name)
+    for each in ast.named_start:
+        rename_everything(each.transition, from_name, to_name)
+    for each in ast.floating_labels:
+        rename_everything(each, from_name, to_name)
+    for each in ast.states:
+        for inp in each.inputs:
+            rename_everything(inp.transition, from_name, to_name)
+            for idx, param in enumerate(inp.parameters):
+                if param.lower() == from_name.lower():
+                    inp.parameter[idx] = to_name
+        if each.composite:
+            rename_everything(each.composite.content, from_name, to_name)
+    for each in ast.inner_procedures:
+        # Check that from_name is not a redefined variable in the procedure
+        for varname in each.variables.viewkeys():
+            if varname.lower() == from_name:
+                break
+        else:
+            rename_everything(each.content, from_name, to_name)
+
+
+@rename_everything.register(ogAST.Output)
+@rename_everything.register(ogAST.ProcedureCall)
+def _rename_output(ast, from_name, to_name):
+    ''' Rename actual parameter names in output/procedure calls 
+        and possibly the procedure name '''
+    for each in ast.output:
+        if each['outputName'].lower() == from_name.lower():
+            each['outputName'] = to_name
+        for param in each['params']:
+            rename_everything(param, from_name, to_name)
+
+
+@rename_everything.register(ogAST.Label)
+def _rename_label(ast, from_name, to_name):
+    ''' Rename elements in the transition following a label '''
+    if ast.inputString.lower() == from_name.lower():
+        ast.inputString = to_name
+    rename_everything(ast.transition, from_name, to_name)
+
+@rename_everything.register(ogAST.Decision)
+def _rename_decision(ast, from_name, to_name):
+    ''' Rename elements in decision '''
+    if ast.kind == 'question':
+        rename_everything(ast.question)
+    for each in ast.answers:
+        rename_everything(each, from_name, to_name)
+
+
+@rename_everything.register(ogAST.Answer)
+def _rename_answer(ast, from_name, to_name):
+    ''' Rename elements in an answer branch '''
+    if ast.kind in ('constant', 'open_range'):
+        rename_everything(ast.constant, from_name, to_name)
+    elif ast.kind == 'closed_range':
+        pass # TODO when supported
+    rename_everything(ast.transition, from_name, to_name)
+
+
+@rename_everything.register(ogAST.Transition)
+def _rename_transition(ast, from_name, to_name):
+    ''' Rename in all symbols of a transition '''
+    for each in chain(ast.actions, ast.terminators):
+        # Label, output, task, decision, terminators
+        rename_everything(each, from_name, to_name)
+
+@rename_everything.register(ogAST.Terminator)
+def _rename_terminator(ast, from_name, to_name):
+    ''' Rename terminators: join/labels, next_state '''
+    if ast.inputString.lower() == from_name.lower():
+        ast.inputString = to_name
+    rename_everything(ast.label, from_name, to_name)
+    rename_everything(ast.return_expr, from_name, to_name)
+
+
+@rename_everything.register(ogAST.TaskAssign)
+def _rename_task_assign(ast, from_name, to_name):
+    ''' List of assignments '''
+    for each in ast.elems:
+        rename_everything(each, from_name, to_name)
+
+@rename_everything.register(ogAST.TaskForLoop)
+def _rename_forloop(ast, from_name, to_name):
+    ''' List of FOR loops '''
+    for each in ast.elems:
+        rename_everything(each['list'], from_name, to_name)
+        rename_everything(each['range']['start'], from_name, to_name)
+        rename_everything(each['range']['stop'], from_name, to_name)
+        rename_everything(each['transition'], from_name, to_name)
+
+@rename_everything.register(ogAST.ExprPlus)
+@rename_everything.register(ogAST.ExprMul)
+@rename_everything.register(ogAST.ExprMinus)
+@rename_everything.register(ogAST.ExprEq)
+@rename_everything.register(ogAST.ExprNeq)
+@rename_everything.register(ogAST.ExprGt)
+@rename_everything.register(ogAST.ExprGe)
+@rename_everything.register(ogAST.ExprLt)
+@rename_everything.register(ogAST.ExprLe)
+@rename_everything.register(ogAST.ExprDiv)
+@rename_everything.register(ogAST.ExprMod)
+@rename_everything.register(ogAST.ExprRem)
+@rename_everything.register(ogAST.ExprAssign)
+@rename_everything.register(ogAST.ExprOr)
+@rename_everything.register(ogAST.ExprIn)
+@rename_everything.register(ogAST.ExprAnd)
+@rename_everything.register(ogAST.ExprXor)
+@rename_everything.register(ogAST.ExprAppend)
+@rename_everything.register(ogAST.ExprAssign)
+def _rename_expr(ast, from_name, to_name):
+    ''' Two-sided expressions '''
+    rename_everything(ast.left, from_name, to_name)
+    rename_everything(ast.right, from_name, to_name)
+
+@rename_everything.register(ogAST.PrimPath)
+@rename_everything.register(ogAST.PrimVariable)
+def _rename_path(ast, from_name, to_name):
+    ''' Ultimate seek point for the renaming: primary path/variables '''
+    if ast.value[0].lower() == from_name.lower():
+        ast.value[0] = to_name
+
 def format_ada_code(stmts):
     ''' Indent properly the Ada code '''
     indent = 0

Clipboard.py

@@ -90,7 +90,8 @@ def copy_branch(top_level_item):
                 (term.pos_x, term.pos_y, term.width, term.height).center())
         for symbol in symbols:
             if (isinstance(symbol, sdlSymbols.State) and [c for c in
-                symbol.childSymbols() if isinstance(c, sdlSymbols.Input)]):
+                symbol.childSymbols() if isinstance(c, (sdlSymbols.Input,
+                    sdlSymbols.Connect))]):
                 term_branch, term_inators = copy_branch(symbol)
                 branch.extend(term_branch)
                 res_terminators.extend(term_inators)

Renderer.py

@@ -101,18 +101,19 @@ def _automaton(ast, scene):
         top_level_symbols.append(render(label, scene, ast.states))
 
     # Render floating states
-    nested_states = {}
+    nested_states = []
     for state in ast.states:
         # Create only floating states
         try:
             new_state = render(state, scene=scene, states=ast.states,
                                terminators=ast.parent.terminators)
             if new_state.nested_scene:
-                if str(new_state).lower() in nested_states.viewkeys():
+                if str(new_state).lower() in nested_states: #.viewkeys():
                     new_state.nested_scene = None
                 else:
-                    nested_states[str(new_state).lower()] = \
-                                                         new_state.nested_scene
+                    nested_states.append(str(new_state).lower())
+                    #nested_states[str(new_state).lower()] = \
+                    #                                    new_state.nested_scene
         except TypeError:
             # Discard terminators (see _state function for explanation)
             pass
@@ -171,8 +172,7 @@ def _start(ast, scene, states, parent=None):
     start_symbol = sdlSymbols.Start(ast)
     scene.addItem(start_symbol)
     if ast.transition:
-        render(ast.transition,
-                      scene=scene, parent=start_symbol, states=states)
+        render(ast.transition, scene=scene, parent=start_symbol, states=states)
     return start_symbol
 
 
@@ -195,8 +195,7 @@ def _procedure_start(ast, scene, states, parent=None):
     start_symbol = sdlSymbols.ProcedureStart(ast)
     scene.addItem(start_symbol)
     if ast.transition:
-        render(ast.transition,
-                      scene=scene, parent=start_symbol, states=states)
+        render(ast.transition, scene=scene, parent=start_symbol, states=states)
     return start_symbol
 
 
@@ -209,24 +208,19 @@ def _floating_label(ast, scene, states, parent=None):
         scene.addItem(lab)
     lab.setPos(ast.pos_x, ast.pos_y)
     if ast.transition:
-        render(ast.transition,
-                      scene=scene,
-                      parent=lab,
-                      states=states)
+        render(ast.transition, scene=scene, parent=lab, states=states)
     return lab
 
 
 @render.register(ogAST.Transition)
 def _transition(ast, scene, parent, states):
     ''' Add a transition to a scene '''
-    for action_symbol in ast.actions:
+    for each in ast.actions:
         # pylint: disable=E1111
-        parent = render(action_symbol,
-                               scene=scene, parent=parent, states=states)
+        parent = render(each, scene=scene, parent=parent, states=states)
 
     if ast.terminator:
-        render(ast.terminator,
-                      scene=scene, parent=parent, states=states)
+        render(ast.terminator, scene=scene, parent=parent, states=states)
 
 
 @render.register(ogAST.Comment)
@@ -296,8 +290,7 @@ def _terminator(ast, scene, parent, states):
     ''' Create a TERMINATOR symbol '''
     if ast.label:
         # pylint: disable=E1111
-        parent = render(ast.label,
-                               scene=scene, parent=parent, states=states)
+        parent = render(ast.label,scene=scene, parent=parent, states=states)
     if ast.kind == 'next_state':
         LOG.debug('ADDING NEXT_STATE ' + ast.inputString)
         # Create a new state symbol
@@ -309,9 +302,11 @@ def _terminator(ast, scene, parent, states):
                     state_ast.pos_x == ast.pos_x and
                     state_ast.pos_y == ast.pos_y):
                 LOG.debug('MERGING TERMINATOR "' + ast.inputString + '"')
-                for input_ast in state_ast.inputs:
-                    render(input_ast,
-                                  scene=scene, parent=symbol, states=states)
+                symbol.nested_scene = state_ast.composite or \
+                                      ogAST.CompositeState()
+                for each in chain(state_ast.inputs, state_ast.connects):
+                    render(each, scene=scene, parent=symbol, states=states)
+                break
     elif ast.kind == 'join':
         symbol = sdlSymbols.Join(parent, ast)
     elif ast.kind in ('return', 'stop'):
@@ -338,12 +333,11 @@ def _input(ast, scene, parent, states):
     return inp
 
 @render.register(ogAST.Connect)
-def _input(ast, scene, parent, states):
+def _connect(ast, scene, parent, states):
     ''' Add connect symbol from the AST to the scene '''
-    # Note: PROVIDED clause is not supported
     conn = sdlSymbols.Connect(parent, ast=ast)
     if conn not in scene.items():
-        scene.addItem(inp)
+        scene.addItem(conn)
     if not parent:
         conn.setPos(ast.pos_x, ast.pos_y)
     if ast.transition:

genericSymbols.py

@@ -375,7 +375,7 @@ class EditableText(QGraphicsTextItem, object):
                 text_cursor.clearSelection()
                 self.setTextCursor(text_cursor)
             # If something has changed, check syntax and create undo command
-            if(self.oldSize != self.parentItem().boundingRect() or 
+            if(self.oldSize != self.parentItem().boundingRect() or
                                                     self.oldText != str(self)):
                 # Call syntax checker from item containing the text (if any)
                 self.parentItem().check_syntax()
@@ -624,8 +624,7 @@ class Symbol(QObject, QGraphicsPathItem, object):
     def is_composite(self):
         ''' Return True if nested scene has something in it '''
         try:
-            return self.allow_nesting and any(item.isVisible()
-                                        for item in self._nested_scene.items())
+            return any(self._nested_scene.visible_symb)
         except AttributeError:
             return False
 
@@ -979,6 +978,10 @@ class Symbol(QObject, QGraphicsPathItem, object):
         else:
             self.mode = 'Move'
 
+    def double_click(self):
+        ''' Handle double click on symbol - redefined at symbol level '''
+        pass
+
     def mouse_move(self, event):
         ''' Handle resizing of items - moving is handled in subclass '''
         self.updateConnectionPoints()

ogAST.py

@@ -173,6 +173,7 @@ class PrimPath(Primary):
     is_raw = False
 
 class PrimVariable(PrimPath): pass # XXX should not be raw for codegen
+class PrimFPAR(PrimVariable): pass
 class PrimEnumeratedValue(Primary): pass
 class PrimInteger(Primary): pass
 class PrimReal(Primary): pass
@@ -770,8 +771,12 @@ class CompositeState(Process):
         self.exit_procedure = None
         # Body can contain text areas, procedures, composite states,
         # one nameless START, named START (one per entrypoint), states,
-        # and floating labels.
-        # XXX check what to do with local DCL and timers
+        # amd floating labels
+
+    def __repr__(self):
+        ''' Debug output for composite state '''
+        return 'COMPOSITE STATE {exp} ({l},{c})'.format(exp=self.statename,
+                l=self.line, c=self.charPositionInLine)
 
 
 class Block(object):

ogParser.py

@@ -320,6 +320,27 @@ def fix_special_operators(op_name, expr_list, context):
                                 and not basic.kind.endswith('StringType'):
                 # Currently supported printable types
                 raise TypeError('Write operator does not support type')
+    elif op_name.lower() == 'set_timer':
+        if len(expr_list) != 2:
+            raise TypeError('SET_TIMER has 2 parameters: (int, timer_name)')
+        basic = find_basic_type(expr_list[0].exprType)
+        if not basic.kind.startswith('Integer'):
+            raise TypeError('SET_TIMER first parameter is not an integer')
+        timer = expr_list[1].inputString
+        for each in context.timers:
+            if each.lower() == timer.lower():
+                break
+        else:
+            raise TypeError('Timer {} is not defined'.format(timer))
+    elif op_name.lower == 'reset_timer':
+        if len(expr_list) != 1:
+            raise TypeError('RESET_TIMER has 1 parameter: timer_name')
+        timer = expr_list[0].inputString
+        for each in context.timers:
+            if each.lower() == timer.lower():
+                break
+        else:
+            raise TypeError('Timer {} is not defined'.format(timer))
     else:
         # TODO: other operators
         return
@@ -603,8 +624,8 @@ def find_variable(var, context):
     result = UNKNOWN_TYPE
     LOG.debug('[find_variable] checking if ' + str(var) + ' is defined')
     # all DCL-variables
-    all_visible_variables = dict(context.variables)
-    all_visible_variables.update(context.global_variables)
+    all_visible_variables = dict(context.global_variables)
+    all_visible_variables.update(context.variables)
     # First check locally, i.e. in FPAR
     try:
         for variable in context.fpar:
@@ -746,7 +767,14 @@ def fix_expression_types(expr, context):
             try: